12+8k=48
=>8k=36
=>k=36/8
=>k=4.5
x*5 - quarter amount
(x+15)*25- nickels amount
(x*5)+((x+15)*25)=735
5x+25x+375=735
30x=735-375
30x=360
x=360/30=12 - number of nickels
x+15=12+15=27 - number of quarters
CHECK
12*5=60 ¢
27*25=675 ¢
675+60=735 ¢ or $7.35
Answer:
A lot of work
Step-by-step explanation:
29% (.285 is 29 percent rounded because u have to move two decimals to the right to get your percentage)
